[FEAT] Scroll only in one direction

[Fred Bowker]

Hi,

A massive thanks for creating this pager, it's really useful.

One feature that would be good is for a setting to only swipe in one direction, so basically I want to be able to swipe cards forward but never backwards, if you can give me a couple of pointers for where I could do this I could give it a go at coding myself. I think this feature would be useful to the component.

I had a look in the code and I think the change can be made in

extension Pager {

    var swipeGesture: some Gesture {
        DragGesture(minimumDistance: minimumDistance)
            .onChanged({ value in
              if isLeftToRightGesture(value) {
                self.onDragChanged(with: value)
              }
            })
            .onEnded({ (value) in
              if isLeftToRightGesture(value) {
                self.onDragGestureEnded()
              }
            })
    }

    private func isLeftToRightGesture(_ value: DragGesture.Value) -> Bool {
      return !((value.location.x - value.startLocation.x) > 0)
    }

}

Cheers, Fred

[Fernando]

Hi @fred-bowker , thanks for the kind words but especially for the feature request and the possible implementation. You're right, the change should be done. You might wanna check how that works with a vertical Pager but it should be fine as that just a Pager that's rotated.

If you're okay with it, send a PR and I'll take a look and make or suggest changes on top of it. As a user, I'd expect a modifier that accepts an optional enum with values forwards and backwards and then convenience modifiers forwards and backwards (similar to horizontal and vertical although the naming in this case might be confusing).

Anyways, that's a conversation for later, I'm open to suggestions. Happy to review a PR, thanks again